Daily survival rates and dispersal of Aedes Aegypti females in Rio de Janeiro, Brazil

Abstract

Submitted by Sandra Infurna ([email protected]) on 2019-06-28T11:17:18Z No. of bitstreams: 1 RafaelMFreitas_ClaudiaCodeço_etal_IOC_2007.pdf: 312299 bytes, checksum: 94eddb87cc3d568944ba561623ad0137 (MD5)Approved for entry into archive by Sandra Infurna ([email protected]) on 2019-06-28T11:25:05Z (GMT) No. of bitstreams: 1 RafaelMFreitas_ClaudiaCodeço_etal_IOC_2007.pdf: 312299 bytes, checksum: 94eddb87cc3d568944ba561623ad0137 (MD5)Made available in DSpace on 2019-06-28T11:25:05Z (GMT). No. of bitstreams: 1 RafaelMFreitas_ClaudiaCodeço_etal_IOC_2007.pdf: 312299 bytes, checksum: 94eddb87cc3d568944ba561623ad0137 (MD5) Previous issue date: 2007Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.Fundação Oswaldo Cruz. Presidência. Programa de Computação Científica. Rio de Janeiro, RJ. Brasil.Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Transmissores de Hematozoários. Rio de Janeiro, RJ. Brasil.Daily survival rates, life expectancy, dispersal, and parity are important components of vectorial capacity of Aedes aegypti. These parameters were estimated for mosquito populations from a slum and a suburban district in Rio de Janeiro, during the wet and dry seasons in 2005. In each mark-release-recapture experiment, three cohorts of dust-marked Ae. aegypti females were released. Recaptures were carried out daily in randomly selected houses, using backpack aspirators, adult traps, and sticky ovitraps. Recapture varied between 6.81% and 14.26%. Daily survival was estimated by fitting two alternative models: exponential and nonlinear models with correction for the removal of individuals. Slum area presented higher survival and parity rates (68.5%). Dispersal rates were higher in the suburban area, where a maximum dispersal of 363 m was observed. Results suggest intense risk of dengue epidemic, particularly in the urban area